Physics

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Across
  1. 3. Electricity into sound
  2. 6. acoustic variable
  3. 7. how many times an event occurs per time
Down
  1. 1. form of ultrasound that cblood flowt blooflow
  2. 2. affected by both frequency and propagation velocity
  3. 4. the length of space that one cycle takes up
  4. 5. Sound into electricity